Citation
Kivimäki, A. and Alvarez Ruiz, Jesus and Flammini, R. and Coreno, M. and Richter, R.
(2013).
On the production of N-2(+) ions at the N 1s edge of the nitrogen molecule.
"Physica Scripta", v. 87
;
pp. 1-6.
ISSN 0031-8949.
https://doi.org/10.1088/0031-8949/87/06/065304.
Abstract
The N+2 ion yield of the N2 molecule has been measured at the N 1s → Rydberg excitations. It displays Fano-type line shapes due to interference between direct outer-valence photoionization and participator decay of the core-excited Rydberg states. The N+2 ion yield is compared with the total intensity of the outer-valence photoelectron lines obtained recently with electron spectroscopy (Kivimäki et al 2012 Phys. Rev. A 86 012516). The increasing difference between the two curves at the higher core-to-Rydberg excitations is most likely due to soft x-ray emission processes that are followed by autoionization. The results also suggest that resonant Auger decay from the core–valence doubly excited states contributes to the N+2 ion yield at the photon energies that are located on both sides of the N 1s ionization limit.